nyantheae

"Giant Green Anemone" (Anthopleura xanthogrammica)

Also known as the Green Surf Anemone, Green Anemone, Solitary Anemone, Rough Anemone, and the Giant Tidepool Anemone, Anthopleura xanthogrammica is a species of Actiniid sea anemone that inhabits low to mid intertidal zones in the Pacific Ocean, ranging from Alaska to Southern California and rarely down to Panama. Like other sea anemones A. xanthogrammica sports several nemoatocyst lined tentacles which are used to paralyze and capture prey that wanders too close. Phoyosynthetic algae of the genus Zoochlorella and dinoflagellates of the genus Symbiodinium live in the tissue and gut of A. xanthogrammica, in this symbiotic relationship they will provide nutrients to the anemone via photosynthesis (partly giving the anemone its green coloration) and in turn they get a safe place to reside. 

Classification

Animalia-Cnidaria-Anthozoa-Hexacorallia-Actinaria-Nyantheae-Thenaria-Actiniidae-Anthopleura-A. xanthogrammica

Image: Stan Shebs

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Pom-pom Anemone (Liponema brevicornis)

Also known as the tentacle shedding anemone, the pom-pom anemone is a species of sea anemone found in deep water in the north east Pacific. Like other anemones the pom-pom anemone is a carnivore and will attempt to eat any small animals unfortunate enough to swim into its tentacles. Pom-pom anemones are also fed on by sea spiders who steal tentacles from it. Although it usually lives a sessile lifestyle, the pom-pom anemone does not attach its self to a substrate and it can roll itself up like a rug and drift with the current like a tumbleweed, stopping when it reaches a solid object. 

Phylogeny

Animalia-Cnidaria-Anthozoa-Hexacorallia-Actiniaria-Nyantheae-Thenaria-Liponematidae-Liponema-brevicornis

Image Source(s)